A widget that creates a separate display list for its child.
This widget creates a separate display list for its child, which can improve performance if the subtree repaints at different times than the surrounding parts of the tree. Specifically, when the child does not repaint but its parent does, we can re-use the display list we recorded previously. Similarly, when the child repaints but the surround tree does not, we can re-record its display list without re-recording the display list for the surround tree.
- Inheritance
- Object
- Widget
- RenderObjectWidget
- SingleChildRenderObjectWidget
- RepaintBoundary
Static Methods
-
wrapAll(
List<Widget> widgets) → List<RepaintBoundary> -
Wraps each of the given children in RepaintBoundarys.
Constructors
- RepaintBoundary({Key key, Widget child })
-
Creates a widget that isolates repaints.
- RepaintBoundary.wrap(Widget child, int childIndex)
-
Wraps the given child in a RepaintBoundary.
factory
Properties
- child → Widget
-
The widget below this widget in the tree.
read-only, inherited - hashCode → int
-
Get a hash code for this object.
read-only, inherited - key → Key
-
Controls how one widget replaces another widget in the tree.
read-only, inherited - runtimeType → Type
-
A representation of the runtime type of the object.
read-only, inherited
Operators
-
operator ==(
other) → bool -
The equality operator.
inherited
Methods
-
createRenderObject(
BuildContext context) → RenderRepaintBoundary -
Creates an instance of the
RenderObjectclass that thisRenderObjectWidgetrepresents, using the configuration described by thisRenderObjectWidget. -
createElement(
) → SingleChildRenderObjectElement -
RenderObjectWidgets always inflate to a
RenderObjectElementsubclass.inherited -
debugFillDescription(
List<String> description) → void -
Add additional information to the given description for use by toString.
inherited -
didUnmountRenderObject(
RenderObject renderObject) → void -
A render object previously associated with this widget has been removed from the tree. The given RenderObject will be of the same type as returned by this object's createRenderObject.
inherited -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a non-existent method or property is accessed.
inherited -
toString(
) → String -
Returns a string representation of this object.
inherited -
toStringShort(
) → String -
A short, textual description of this widget.
inherited -
updateRenderObject(
BuildContext context, RenderObject renderObject) → void -
Copies the configuration described by this RenderObjectWidget to the given RenderObject, which will be of the same type as returned by this object's createRenderObject.
inherited